Improve clarity of Physical Web onboarding interstitial message

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index c3dc17c90fcd1eed1aa06946f9f46a53731c6934..4b5a3e7cb19a792d015528250f3d5744fae21048 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -2365,11 +2365,9 @@ You must have Bluetooth and Location turned on in order to use the Physical Web.
         Chrome + Physical Web
       </message>
       <message name="IDS_PHYSICAL_WEB_OPTIN_DESCRIPTION" desc="Description of the Physical Web displayed in the opt-in dialog">
-        Chrome can now find and show you nearby web pages using Bluetooth.
+        Devices nearby you are broadcasting web pages over Bluetooth. Chrome will scan for pages and display them when you wake up your device. These pages will go through a Google service to improve the quality of page results.
 
-Chrome will scan for nearby pages when your device is unlocked. These pages will go through a Google service to improve the quality of page results.
-
-You can control the Physical Web in Chrome privacy settings.
+You can control the Physical Web in Chrome Settings.
       </message>
       <message name="IDS_PHYSICAL_WEB_LIST_URLS_ACTIVITY_TITLE" desc="The title for a dialog that shows a list of URLs broadcasted from nearby devices.">
         The Physical Web